This such Upgrade allows you to fill up all 4 slots with the same item upto 100.

Example: fill up one vac slot with phase lemons, but wait! There’s more to be collected and you want them Now!! So now you can! Just keep sucking and fill up another slot of you Vac until you’ve reached the maximum of 400 Phase Lemons!!

Simple!!

Xbox1: The LevensWatch me on Mixer if I’m on.Day 300+Z:28+2,300,000U in the Bank

I'd support making the maximum more like 120, 150 at most, or adding a way to fill multiple slots with the same item, but 400 items is too many. Not least because of how long it would take to empty that many items out! But also because that's a huge number. I'd like 120 because that way I can empty out a Plort collector even if it kicks on and picks up a few more Plorts while I'm harvesting them.